Dyfyniad APA
ebrary, Inc, Adler, P. S., & Winograd, T. (1992). Usability: Turning technologies into tools. Oxford University Press.
Dyfyniad Arddull Chicago
ebrary, Inc, Paul S. Adler, and Terry Winograd. Usability: Turning Technologies into Tools. New York: Oxford University Press, 1992.
Dyfyniad MLA
ebrary, Inc, et al. Usability: Turning Technologies into Tools. Oxford University Press, 1992.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.